Conveying device for paper pulp



Oct. 27, 1931. R. T. LANG 1, 5%

CONVEYING DEVICE FOR PAPER PULP Filed Feb. 4, 1927 Allamgy Patented Octo 27, 1931 UNITED STATES PATENT OFFICE BICHLABD T. LANG, 0F WEIIHAWKEN, NEW JERSEY, ASSIGNOB TO AMERICAN VOITH CONTACT COMPANY, INCORPORATED, NEW YORK OF NEW YORK, N. Y., A CORPORATION 01 CONVEYING DEVICE FOR PAPER PULP Application filed February 4, 1927. Serial No. 165,774.

This invention relates to a conveying device for paper pulp and other materials, and has for its general object and purpose to provide means for feeding pulp materialin a compact mass and disintegrating the material as it is fed under pressure into a receiving chamber constituting a section of a conveyer conduit through which the disintegrated material is conveyed to a desired point for further treatment.

It is a more particular object of the invention to provide a device for the above purpose embodying a trough to receive the pulp material and having a conveyer screw mounted therein, a. receiving chamber at one end of the trough, and said troughincluding a tapering section connected at its larger end with the inlet side of said chamber together with a suitable disintegrating means connected with the shaft of the feed screw arranged in said chamber inlet to cut, shread or disintegrate the plug of pulp material contained in said conical trough section, as it is fed under pressure by the screw through said chamber inlet.

It is a further general object of the invention to provide a conveying device for paper pulp which is of relatively simple construction, not liable to get out of order, and efficient and reliable for the purpose in view.

With the above and other objects in view, the invention consists in the improved conveying device for paper pulp and other materials, and in the form, construction, and relative arrangement of the several parts thereof. as will be hereinafter more fully described, illustrated in the accompanying drawing, and subsequently incorporated in the subjoined claims.

In the drawing, wherein I have shown one simple and practical embodiment of my present improvements, I have illustrated a longi tudinal vertical sectional View through the device.

Referring in detail to the drawing, 21 designates a trough which may be of any required dimensions and capacity and into which the pulp is delivered through the hopper inlet 22.

23 is the feeding screw in the cylindrical part of the trough, 2i is the shaft of the screwcarried on the hopper side in a bearing 25 and driven on its free end through a pulley 26. 27 is the conical part of the trough in which the pulp forms the sealing plug, 28 is the knife fastened to the shaft on the pressure chamber side. 29 is the pressure chamber with openings 30 and 31 in it, to which pipes from a source of compressed air and to a storage bin or other apparatus for further treatment of the pulp are respectively connected.

In the operation of the device as above described it will be apparent that as the pulp -material in the trough is fed by the screw 23 towards the chamber 29, it will collect in the part 27 of the trough to form an enlarged conical plug preventing back pressure of air from chamber 29 into the screw chamber of the trough. From the larger end of this conical plug at the inlet to chamber 29, the pulp material is cut, shreaded or disintegrated by the revolving knife like blades 28 on the screw shaft so that it may be readily conveyed from the chamber 29 by the air stream entering said chamber at 30. The blades 28 are. so located or arranged that the capacity of chamber 29 is not appreciably reduced, while at the same time these revolving blades will not greatly retard or resist the feeding movement of the plug of pulp material from the trough sec tion 27 into said chamber.

I have herein shown and described an embodiment of my invention, which has been found very satisfactory in practical operation. Nevertheless, it is to be understood that the essential features thereof may also be incorporated in various alternative structural forms, and I therefore, reserve the privilege of resorting to all such legitimate changes therein as may be fairly embodied within the spirit and scope of the invention as claimed.

-What I claim as my invention is:

1. In apparatus for treating paper pulp stock. a stock receiving trough and a pressure chamber at one end thereof, a stock transporting screw in said trough to feed the stock into said pressure chamber, means connecting 1 said trough with the ingresaside of said i r sure chamber for the accumulation of a stock mass beyond the end of the transporting screw exceeding the capacity of said pressure chamber, means on the screw shaft at the ingress side of the ressure chamber act upon the stock to disintegrate the same, li g pneumatic means connected with saidpressure chamber to discharge the disintegrated stock therefrom.

2. In apparatus for treatin paper. pulp stock, a stock receivin trough aving a pressure chamber at one end thereof a stock transporting screw. mounted in' trough, said trough including a section of gradually in creasing diameter extending beyond one end of the'screw and connected at its larger and 1 with the ingress side of the pressure chamber, a revolvin knife on the screw shaft-at the ingress si e of the pressure chamber acting upon the entering stock to disintegrate the same, and pneumatic means connected to said pressure chamber to, discharge the disin tegrated stock therefrom. 4 p n testimony that I claim the foregoing m invention Ihavesi. edm name hereto. jRlC i ARl '1'. may 

